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We really don't need to and shouldn't make any changes before we need to. There's really nothing to worry about quantum attacks.
In fact, if looking at the Bitcoin code, we can see that Satoshi have already made multiple ways to mitigate such worries.
Replies (2)
Are you kidding? The attack is mathematically proven. There is literally nothing Bitcoin can do in it's current form. It's just a matter of computational resources, that's it.
And no, Satoshi didn't envision anything about quantum computing, Shor's algo (which he could not have know about) and AI assisted error correction (which he also could not have known about).
This for Satoshi is a complete black sawn.
We're are still at least tens of years away when there even could be enough cubits to brake SHA-256 and way before we'll just update the algorithm.
Bitcoin's design already has features which mitigates the quantum threat:
- standard addresses which don't leak your pub key
- possibility to not re-use addresses
- ~10min network confirmation time that provides buffer
